fix tests

Author: erikvw

edc_metadata/tests/tests/test_metadata_deleter.py

@@ -1,3 +1,6 @@
+from datetime import datetime
+from zoneinfo import ZoneInfo
+
 from dateutil.relativedelta import relativedelta
 from django.db.models import ProtectedError
 from django.test import TestCase, override_settings
@@ -11,10 +14,11 @@
 from edc_metadata.metadata import DeleteMetadataError
 from edc_metadata.models import CrfMetadata, RequisitionMetadata
 
-from ..constants import test_datetime
 from ..models import CrfOne, SubjectRequisition
 from .metadata_test_mixin import TestMetadataMixin
 
+test_datetime = datetime(2019, 6, 11, 8, 00, tzinfo=ZoneInfo("UTC"))
+
 
 @override_settings(
     EDC_PROTOCOL_STUDY_OPEN_DATETIME=test_datetime - relativedelta(years=3),